A church of bones, decorated with 40,000 human skeletons.

Europe's second largest ossuary wasn't discovered until 2001.

Mummified monks and the accidentally interred, in a 17th-century crypt.

The walls and ceiling of this Polish church are decorated with thousands of skulls, with another 21,000 skeletons just below.

A 16th century chapel decorated with bones, skulls, and entire bodies hanging from the wall.

This Czech military museum is home to pink tank that was once a symbol of art and political rebellion.

Czech architects borrow from the nest design of the stork to revitalize a farmstead, hoping to inspire the same loyalty the birds had shown.

An Austrian house of bones filled with hundreds of intricately painted skulls.

Underneath this small church are 15,000 bones, arranged by an obsessive academic.

Monument to a suicide protesting the Soviet invasion.

A collection of anatomical samples from one of the first anthropologists to suggest that humans reached North America by crossing the Bering Strait.

The encased skull that is widely believed to belong to St. John the Baptist.

A saintly relic hidden in a Prague church basement.

Looming communist pillar with a Czech twist.

The last municipal pneumatic post system in the world was in operation for over 100 years, and may run again.

This Prague museum collects brutalist relics and memories from the country's former Soviet rule.

A 400-year-old mummified arm dangles from the ceiling of St. James the Greater, serving as a warning to thieves.

Steadily reminding Czechia of its past.

Despite attempts by local police to discourage it, Beatles-inspired graffiti has been a means for artists to air grievances for decades.

The history of occult science is turned into a creepshow at this lurid Prague tourist attraction.

Two stunning 17th-century libraries and a cabinet of curiosities.

Microscopic scenes; some call it novelty, some call it art.

A crucified and bearded female saint.

An isolated dive site teeming with cnidarians.